Debbie Rohn v. Viacom Int'l, Inc.

KETHLEDGE, Circuit Judge.

Debbie and Dean Rohn argue that Viacom’s trademarked television characters (the Bubble Guppies) have pushed their trademarked clothing line (Guppie Kid) out of the market, and that Viacom has therefore infringed on their trademarks. But Guppie Kid’s sales had largely dried up well before the Bubble Guppies came along. For this reason and more, the district court granted summary judgment to Viacom. We affirm.

The Rohns own two trademarks. One is for the word GUPPIE, an acronym for “Growing Up Playing Pursuing Individual Excellence.” The other is for a logo: the word…